Ladder for stave structures.



E. A. BERRY.

LADDER FOR STAVE STRUCTURES.

APPLICATION FILED OCT. 11.1914.

Patented Sept. 14, 1915.

l/VVE/VTUR far/e14. Ber/ 7 i9, WWII/E8858 COLUMBIA PLANOGRAPH COWASHINGTON. D. C-

ii iii a. t i g 2 EARLnA. BERRY, OFKANSAS CITY, MISSOURI.

LADDER FOR STAVE STRUCTURES.

To all whom it may concern:

Be 11; known that I, Earns A. BERRY, a citizen of the United States, anda resident of Kansas City, in the county of Jackson and State ofMissouri, have invented a new and Improved Ladder for Stave Structures,of which the following is a full, clear, and exact description. V v Myinvention relates to ladders for stav structures, such as silos, tanks,etc.

An object of the invention is to provide a ladder for stave structureswhich is simple, strong and inexpensive and which forms part of the tiehoops which bind the stave structures.

Another object of the invention is to provide a ladder the alternatesteps of which form part of a lug engaged by the ends of a tie hoop, andthe other step of a loop depending from the lug.

With the above and other objects in view, the nature of which will morefully appear as the description proceeds, the invention consists in thenovel construction, combination and arrangement of parts as hereinfullydescribed, illustrated and claimed.

In the accompanying drawings, forming part of the application, similarcharacters of reference indicate corresponding parts in all the views,and

Figure 1 is a perspective view of a tie hoop for stave structuresprovided with an embodiment of my invention to form a ladder for thestructure; Fig. 2 is a horizontal section on line 22, Fig. 1, and Fig. 3is a vertical section on line 33, Fig. 2.

Referring to the drawings, 10 represents a tie hoop which encompassesthe staves forming the structure and is in the same plane with acorresponding dowel hoop 9.

The tie hoop 10 may be formed of more than one section, in which case itwill have more than one lug 11 which engage the ends of the sections andwhereby the tie hoop can be varied in diameter by tightening the nuts 12engaging the threaded ends of the sections forming the tie hoop-10. Thenuts 12 rest against the facing shoulders 13 of the lug. Between thesaid shoulders each lug has a U-shaped lateral extension 14locatedcentrally between said lugs and adja cent the upper edge. The base ofthe U forms a ladder step, from which depends another step of a U-shapedloop 15. The ends of the U-shaped loop are clamped to the sides of theU-shaped projection 14. The

straight ladder.

Specification of Letters Patent. Patentgd Sept, 14, 1915 Applicationfiled October 17, 1914. Serial No. 867,144.

lower end of said U-shaped loop 15 is made to project laterally (asshown at 16) away from the lug by bending the side of said loop 15. Thisbend in the loop makes the step, which is. suspended from the stepformed by the U-shaped projection 14. The laterally projecting portionof the loop preferably Xtends slightly farther than the bottom oftheloop 14.

The lugs 11 maintain the ends of the sections of the tie hoop in thesame plane, and, therefore, when the sections of the tie hoop are drawntoward each other the pull is in the plane of the tie hoop, and not atan angle as in the tie hoops used at present. The successive stepsformed by the projection 14 and the wire loop 15 of the successive tiehoops will form a ladder on which a person can reach the top of thestave structure, and on which steps one can stand while engaged intightening the tie hoops at different heights of the stave structure. Itis selfevident that the successive steps formed by each tie hoop are inalinement, that is, one above or below the other, so as to make a. Thewire loop 15 is in reality a stirrup attached to the projection 14 ofthe lug, which forms an additional step, as described. and forms theintermediate step between the two tie hoops.

From the foregoing description, taken in connection with theaccompanying drawings, the advantage of the construction and operationof the device shown will be readily understood by those skilled in theart to which the invention pertains, and while I have described theprinciple of operation, together with the device which I now con siderto be the best embodiment thereof, I desire to have it understood thatthe device shown is merely illustrative and that such changes may bemade as are within the scope of the appended claims.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. A ladder structure of the class described comprising,a lug adapted toreceiveand retain the ends of a tie hoop, said lug having a projectingportion forming a step, and a loop depending from said projection andalso forming a step.

2. A ladder structure of the class described the alternate steps ofwhich are formed of a lug having means adapted to receive andretain theends of a tie hoop, said lug having a Ushaped projection the bottomofwhich U forms a step, and a stirrup secured to the side of the U-shapedprojection, forming an additional step. 7 V

3. A ladder structure of the class described the alternate steps ofwhich are formed by a projection from a lug, and a loop depending fromthe projection of the lug, said lug having means for engaging andretaining the ends of a tie hoop.

4. A ladder structure of the class described the alternate steps ofwhich are formed by a lug havin a substantially horizontal U shaped proection, the bottom of the U forming a step, and a U-shaped wire loopdepending from said projection With the ends of jection, the lower partof said U-shaped loop being bent laterally to form a step substantiallyas described. 7

5. The combination with a tie hoop, a lug adapted to receive and retainthe ends-of the tie hoop, said lug having a substantiallyhorizontalprojection forming a step. 7

In testimony whereof I have signed my name to this specification. in thepresence of two subscribing witnesses.

EARLE A. BERRY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

